the head gasket wasnt blown, got the codes pulled from the computer and it reads that my o2 sensors are bad , my mass air flow and my coolant temp. so i changed the mass air flow and the coolant and the truck ran better but still smoked turns out that injector 1 was stuck open so i changed the injector and now it wont work . so i jumped power from injector 3 and now the the truck idles fine and and revs up normal no smoke.now my question is does the computer loose its program ?

computurs can go bad causeing all kinds of problems.. the only other way to find out is take the truck to the shop and have the computer tested are buy another one. but it has to have the same code computer you have now. that number is where the big plug goes into the computer on the firewall

hey all i am having issues with my ranger. its a 94 model and its spits and sputters all the time. we changed out plugs and wires and the fuel filter. we had one guy look at it and say it was the ecm and i dont think that is the case i need a little more info and need help to see what i can do before spending money at a shop. any info will will great thanx....